Routes › Bozeman (BZN) › BZN to BOS
Route · 12 months to July 2026
Bozeman to Boston: on-time record
Bozeman Yellowstone International to Logan International
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report. Data through July 2026; this is a monthly history, not live flight status.
62.3% of scheduled BZN to BOS flights arrived on time in the 12 months to July 2026. The figure covers 207 flights between Bozeman and Boston by carriers that report to BTS, a distance of 1,991 miles.
That is 13.7 points below the national on-time share of 76.0% for the same period and 17.2 points below the 79.5% recorded for all departures from BZN. Flights that did arrive were 43.6 min late on average, and 4.3% of scheduled flights were cancelled (national: 1.8%).
2 reporting carriers flew the route at least 60 times. JetBlue Airways had the highest on-time share at 64.8% of 142 flights; Delta Air Lines had the lowest at 56.9% of 65.
By scheduled departure hour (local time at BZN), flights leaving from 11 am to 12 pm had the highest on-time share, 72.1%; those leaving from 1 pm to 2 pm had the lowest, 51.9%.
The on-time share is up 1.7 points on the previous 12 months (60.6%); cancellations moved from 0.0% to 4.3%.
Of the delay minutes that carriers assigned to a BTS cause category on this route, late-arriving aircraft 42%, air carrier 40% and national aviation system 18%.
- On time 62.3%
- Arrived 15+ minutes late 33.3%
- Cancelled 4.3%
- Diverted 0.0%
Airlines on the route compared
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| B6 JetBlue Airways | 142 | 69% | 64.8% | 41.2 min | 4.2% |
| DL Delta Air Lines | 65 | 31% | 56.9% | 48.9 min | 4.6% |
Carriers with at least 24 flights in the 12 months to July 2026. The on-time pill is green when a carrier is at or above the route's overall share. Regional carriers operate flights sold under larger airlines' brands; BTS lists the carrier that operated the flight.
Compared with the airports and the nation
| Measure | BZN to BOS | All departures from BZN | All arrivals at BOS | All reported flights |
|---|---|---|---|---|
| Arrived on time | 62.3% | 79.5% | 71.2% | 76.0% |
| Arrived 15+ minutes late | 33.3% | 19.3% | 25.9% | 21.9% |
| Cancelled | 4.3% | 0.8% | 2.8% | 1.8% |
| Diverted | 0.0% | 0.4% | 0.1% | 0.3% |
| Average arrival delay | 43.6 min | 6.0 min | 11.5 min | 8.1 min |
| Delay minutes per 100 flights | 5,087 | 1,692 | 2,030 | 1,684 |
| Scheduled flights | 207 | 11,804 | 143,441 | 7,043,858 |
12 months to July 2026. Delay minutes count late arrivals only (an early arrival is zero), so the per-100-flights row is a normalised total rather than an average of early and late.
The return direction, BOS to BZN, recorded 66.2% on time across 207 flights in the same period.
Month by month
Year on year: on time 62.3% against 60.6% (+1.7 pts), cancelled 4.3% against 0.0%, flights 207 against 160.
By scheduled departure hour
Delay causes
Seasonality
| Calendar month | Flights | On time | Cancelled | Avg arrival delay | Years in sample |
|---|---|---|---|---|---|
| Jan | 23 | 60.9% | 4.3% | 14.4 min | 3 |
| Feb | 48 | 60.4% | 2.1% | 23.1 min | 3 |
| Mar | 89 | 69.7% | 2.2% | 20.3 min | 3 |
| May | 3 | 100.0% | 0.0% | -16.3 min | 1 |
| Jun | 66 | 59.1% | 0.0% | 21.0 min | 3 |
| Jul | 98 | 56.1% | 3.1% | 28.7 min | 3 |
| Aug | 76 | 61.8% | 0.0% | 58.1 min | 3 |
| Sep | 8 | 75.0% | 0.0% | -0.9 min | 3 |
| Dec | 39 | 41.0% | 5.1% | 72.9 min | 3 |
Each calendar month summed across the 36 months on file, so most rows combine three years. The pill compares the month with the route's own 12-month share.
Other routes from Bozeman (BZN)
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| BZN–DEN | Bozeman to Denver | 2,722 | 76.8% | 5.1 min | 0.4% |
| BZN–SEA | Bozeman to Seattle | 1,573 | 83.8% | 0.4 min | 0.6% |
| BZN–ORD | Bozeman to Chicago | 1,267 | 72.2% | 14.8 min | 1.1% |
| BZN–SLC | Bozeman to Salt Lake City | 1,162 | 89.4% | -1.4 min | 0.5% |
| BZN–MSP | Bozeman to Minneapolis | 805 | 89.4% | -4.6 min | 0.7% |
| BZN–DFW | Bozeman to Dallas/Fort Worth | 713 | 72.5% | 21.4 min | 2.1% |
| BZN–LAS | Bozeman to Las Vegas | 598 | 82.9% | 2.0 min | 0.3% |
| BZN–LAX | Bozeman to Los Angeles | 543 | 88.2% | -5.6 min | 0.0% |
All 28 routes and the airport record for BZN · airport record for BOS
Questions and answers
How often are flights from Bozeman to Boston on time?
62.3% of the 207 flights scheduled from BZN to BOS in the 12 months to July 2026 arrived less than 15 minutes after their scheduled time. The national share for the same period was 76.0%. Cancelled and diverted flights count as not on time.
Which airline has the highest on-time share from BZN to BOS?
Among reporting carriers with at least 60 flights on the route, JetBlue Airways had the highest on-time share (64.8%), followed by Delta Air Lines (56.9%). Differences of a point or two on a few hundred flights are small.
What causes delays between Bozeman and Boston?
For flights that arrived 15 or more minutes late, carriers attributed the delay minutes as follows: late-arriving aircraft 42%, air carrier 40%, national aviation system 18%, extreme weather 0%, security 0%. The categories are the carriers' own reports to BTS; weather that slows the wider system is usually recorded under the National Aviation System rather than extreme weather.
What time of day has the highest on-time share from BZN?
Flights scheduled to leave BZN from 11 am to 12 pm arrived on time 72.1% of the time, the highest of any hour with enough flights to compare. The lowest was 1 pm to 2 pm at 51.9%. Delays tend to build through the day as late aircraft carry over to later flights.
Is it getting better?
The on-time share for the 12 months to July 2026 was 62.3%, up 1.7 points on the previous 12 months (60.6%). The monthly chart on this page shows each of the last 36 months.
Where does this data come from?
Every figure is computed from the Bureau of Transportation Statistics Reporting Carrier On-Time Performance files, which list each scheduled domestic flight by the carriers required to report. This page covers August 2023 to July 2026. It shows totals and averages only; it is not a live flight-status service.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026, a US government work in the public domain. Figures are totals and averages over all scheduled flights by reporting carriers on the route; no individual flight or aircraft is identified. Times are local to the departure airport. The load factor and passenger counts from the BTS T-100 series are not included in this edition. See the methodology; report processing errors through corrections.